api.
api.
SpendPreflight — trust and verification tools for stablecoin payments, built for AI agents and the people who run them. Compare a supplied quote with fresh comparable cached unpaid evidence: Scout latest only or separate seven-day index history.0.001 USDC for a usable comparison; missing/stale/ambiguous evidence is unknown without charge. Never fetches or pays the target. Informational history, not payment approval or loss prevention. No trial.
Filed under Crypto prices & DeFi, Payments & checkout by addrbook, from the words in its listing
Unreachable
No check has succeeded since it was listed on 8 Nov 2026, 20:46 UTC. Last checked 14 Nov 2026, 03:23 UTC.
- answered, last 24 hours
- 0%
- answered, last 30 days
- 0%
1 wallet paid it in the last 30 days, as the x402 Bazaar reports. Payments
How addrbook checks →Evidence
0 of 4 shown
Answers when askedNot shown
Has not answered a check yet.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 5 days; 30 are needed.
Independent paying walletsNot shown
1 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed.
Tool scanDoes not apply
Not an MCP server.
Decided by method 2026.11.4, from its recorded evidence. A check that does not apply is left out of the count.
Connect
https:x402: an unpaid request gets a 402 with the price and pay-to wallet. The check never pays.
Who's behind it
- Listed by
- x402 Bazaarlast seen UTC
- Wallets named
- 0xbf4164e07552e4c1b1b1597e72c7acaa3f0a1c58named by x402 Bazaar
- Proven to belong to it
- Nothing yet. Is it yours?
- Listed since
Payments
- different wallets paid it, last 30 days
- 1
- paid calls, last 30 days
- 2
- last paid call (UTC)
As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read . addrbook has not counted these payments itself.
Its x402 endpoints have not listed a payment option addrbook could read yet.
Checks by endpoint
| Host | Protocol | State | Last checked (UTC) | Last answered (UTC) | 24 hours | 30 days | Tools |
|---|---|---|---|---|---|---|---|
| api. | x402 | Unreachable | — | 0% | 0% | — |
History
Also listed as
Other entries that share an endpoint with this one.
Is it yours?
Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent
Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.
[](https://addrbook.com/agents/api-spendpreflight-com-quote-check-beed45ce)